Leng Ling (CIBR-EN034) - Circuit Break Unlimited

Once per turn, you can either: Target 1 monster you control; equip this card to that target, OR: Unequip this card and Special Summon it. The original ATK of a monster equipped with this card becomes 1000, it can make a second attack during each Battle Phase, also if the equipped monster would be destroyed by battle or card effect, destroy this card instead.